US20120192961A1 - Reconfigurable water flushing and sampling device - Google Patents
Reconfigurable water flushing and sampling device Download PDFInfo
- Publication number
- US20120192961A1 US20120192961A1 US13/500,278 US201013500278A US2012192961A1 US 20120192961 A1 US20120192961 A1 US 20120192961A1 US 201013500278 A US201013500278 A US 201013500278A US 2012192961 A1 US2012192961 A1 US 2012192961A1
- Authority
- US
- United States
- Prior art keywords
- valve
- hydrant
- drain hole
- casing
- inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons, valves, in the pipe systems
- E03B7/08—Arrangement of draining devices, e.g. manual shut-off valves
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons, valves, in the pipe systems
- E03B7/078—Combined units with different devices; Arrangement of different devices with respect to each other
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/09—Component parts or accessories
- E03B7/095—Component holders or housings, e.g. boundary boxes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/5327—Hydrant type
- Y10T137/5456—With casing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/5327—Hydrant type
- Y10T137/5497—Protection against freezing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/494—Fluidic or fluid actuated device making
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Mechanically-Actuated Valves (AREA)
- Sewage (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Description
- This application claims the benefit of Provisional U.S. application Ser. Nos. 61/252031, filed Oct. 15, 2009, and 61/391640, filed Oct. 10, 2010, both of which are incorporated by reference herein.
- Not applicable.
- Dead-ends on water systems are a constant source of water quality problems. The water is not flowing and therefore becomes stagnant, and flushing is required. This is time consuming and inconsistent.
- Also, new EPA regulations are calling for a minimum amount of chlorine to be present at all times at dead-ends. This requires flushing. Other new regulations are requiring that all water systems monitor and control the presence of “disinfectant by-products” (DBPs) within their water. These DBPs are potentially cancer-causing remnants of the chlorination process
- Also, samples need to be taken within all water systems to meet EPA regulations. Many flushing systems have been invented over the years. Simple systems merely utilize a standpipe and a buried valve near the standpipe; workers periodically open the valve and flush the segment of the water system near the standpipe. Others use automatic systems which flush periodically or which flush based on sensed water quality. Still others flush continuously at a low rate. Some flushing systems flush to the ground, while others discharge into a sewer. Some water systems require periodic testing of the water while others do not. Installing a flushing system initially is time-consuming and expensive. The problem, however, is that the user does not know at time of installation what water quality issues may be faced at this location in the future.
- In accordance with the present invention a flushing/sampling device is provided that lets the user be prepared to convert the original device (a manual flushing device) into any of: a continuous flushing device, or an automatic flushing device, or a sampling station, or combinations thereof.
- In accordance with another aspect of the invention, a novel drain for a hydrant is provided, which can be sealed and opened manually by a user from above ground, without digging.
-
FIG. 1 is a view in front elevation of a reconfigurable water flushing and sampling device of the present invention, with a cover in place. -
FIG. 2 is a view in front elevation, of the device ofFIG. 1 , with the cover lifted and disassembled, showing the device in a manual flushing configuration. -
FIG. 3 is a view in front elevation of the device ofFIG. 1 , with the cover shown in cross-section, attached to a water main through an auxiliary shut-off valve. -
FIG. 4 is a view taken along the line 4-4 ofFIG. 2 , showing a mounting plate of the device and pipes of the device extending through it. -
FIG. 5 is a view in right-side elevation, partially cut away, of the device ofFIGS. 1-4 , with the cover removed. -
FIG. 6 is a view in left-side elevation of the device ofFIGS. 1-5 , with the cover removed. -
FIG. 7 is a view in rear elevation, partially cut away, of the device ofFIGS. 1-6 , with the cover removed. -
FIG. 8 is a view in front elevation of the device ofFIGS. 1-7 , with the cover removed and a manual flushing blow-off outlet attached. -
FIG. 9 is a view in right-side elevation, partially cut away, of the device ofFIGS. 1-8 , with the cover removed, showing insertion of a sampling tube into a first access tube of the device. -
FIG. 10 is a view in right-side elevation, partially cut away, of the device ofFIGS. 1-9 , with the cover removed, showing the sampling tube installed in the first access tube of the device. -
FIG. 11 is a view in right-side elevation, partially cut away, of the device ofFIGS. 1-9 , with the cover removed, showing a continuous discharge flusher installed in the first access tube of the device and discharging into a sewer drain adapter of the device. -
FIG. 12 is a view in right-side elevation, partially cut away, of the device ofFIGS. 1-9 , with the cover removed, showing insertion of a rod into a drain access tube. -
FIG. 13 is an enlarged sectional view of the area indicated by line 13-13 ofFIG. 12 , showing one end of the rod screwed into a threaded passage in the drain access tube to block water flow through it. -
FIG. 14 is an enlarged sectional view corresponding toFIG. 13 , showing the other end of the rod maintaining flow through the threaded passage. -
FIG. 15 is a view in rear elevation of the device, partially cut away, showing removal of a stopper and insertion of an automatic flushing device into a second access tube of the device. -
FIG. 16 is a top plan view of the device, corresponding generally toFIG. 4 , showing a cover plate removed from the second access tube. -
FIG. 17 is a view in left-side elevation of the device with the automatic flushing device installed in the second access tube of the device. -
FIG. 18 is a cross-sectional view of a casting of the device with a plunger rod positioned in the casting. -
FIG. 19 is a view similar toFIG. 3 , but wherein the device is mounted on a concrete slab in an installation where a sewer pipe is not available. - The preferred embodiment of a
device 1 in accordance with the invention includes a modified Kupferle Mainguard™ manual blow-off hydrant 101. Kupferle hydrants are available commercially from Kupferle Foundry Company, St. Louis, Mo., US. The modifiedhydrant 101 includes avertical outlet pipe 110 and a verticalvalve stem pipe 120. Thevertical outlet pipe 110 may, if desired, be stopped by acap 111 screwed into its upper end when the outlet pipe is not used. Acasting 102 of thehydrant 101 is modified to accept a first adapter 130 (FIGS. 5-7 , 9-12 and 15) connected below (upstream of) a valve seat 108 (FIG. 18 ) and a second adapter 140 (FIGS. 1,3, 5, and 8-12) connected above the valve seat. Thefirst adapter 130 carries a first access tube 150 (FIGS. 3 and 8 ) and a second access tube 160 (FIGS. 6 and 7 ); and thesecond adapter 140 carries a third access tube 170 (FIG. 8 ), as described hereinafter. A mounting plate 180 (FIGS. 3 and 4 ), bolted to thevalve stem pipe 120 at 181 (FIGS. 7 and 8 ), has openings for theoutlet pipe 110,valve stem pipe 120,access tubes - A molded
plastic enclosure 200 rests on themounting plate 180 and carries alockable cover 210. Theenclosure 200 andcover 210 may be substantially similar to the enclosure and cover of the Kupferle 9800A automatic flushing device. Internal fins 201 (FIG. 3 ) of a moldedplastic enclosure 200 are seated on themounting plate 180 and align the enclosure with themounting plate 180. The mounting plate is typically at or slightly below ground level, as seen inFIG. 3 . The lower part of theenclosure 200 is buried, and the upper, inturnedmargin 202 of theenclosure 200 is somewhat above ground. An out-turned ear 211 (FIGS. 1-2 ) on a side of thecover 210 engages the inturnedmargin 202 of the enclosure, and an outwardly extendingbracket 212 on the opposite side of thecover 210 aligns with an outwardly extendingbracket 203 of theenclosure 200, to allow locking of thecover 210 as by a padlock or the like extending through aligned holes in thebrackets cover 210 is tall enough to accommodate certain elective components such as an automatic flusher or a continuous flusher, which are intended to be used over a long period of time, and not merely while workers are servicing the device. - The
hydrant 101casting 102 has aninlet 103, anoutlet 104, and a manually operated valve plunger 105 (FIG. 18 ), which is manipulated by an operating nut 106 (FIG. 3 ) through arod 107 to raise and lower thevalve plunger 105 into and out of sealing engagement with aseat 108. (FIG. 18 ) - The
casting 102 of the present invention is modified from the standard hydrant in having a first female outlet boss 131 (FIG. 6 ) formed in the inlet upstream of theseat 108. A first adapter 130 (FIGS. 5-7 ) is threaded into theoutlet boss 131. Theadapter 130 includes astub pipe 132 threaded into theoutlet boss 131, in fluid communication with theinlet 103, a T-pipe 133 threaded into the stub pipe 132 (with the stem of the T threaded to the stub pipe, afirst elbow 134 connected to one side of the cross-tube of the T, and afirst transition 135 having an upwardly facing peripheral flange at its upper end sized to receive thefirst access tube 150. Thefirst access tube 150 has aremovable cap 151. Thetransition 135 also includes a central connection 136 (FIGS. 5 and 9-11) for various devices that may be threaded onto it. Thecentral connection 136 is illustratively an upwardly-facing male portion of a screw-together fitting. The male portion contains a closure which is opened when a female fitting is threaded onto it. - The
first adapter 130 also includes a second elbow 137 (FIGS. 6 and 7 ) threaded into the other side of the T-pipe 133, and asecond transition 138. Thesecond transition 138 supports the perforated bottom 167 (FIG. 16 ) of thesecond access tube 160 and provides an upwardly facing female portion 139 (FIG. 15 ) of a push-together fitting. To prevent water from discharging through the fitting 139, astopper 165 is pushed into the fitting 139. Thestopper 165 is formed of a section of rigid plastic tubing having aplug 166 at its lower end and held at its upper end by a first semi-circular removable hold-down plate 161, having a cut-out or recess 163 (FIG. 16 ) sized to engage the upper end of thestopper 165. The hold-down plate 161 is held to the mountingplate 180 bybolts 166. A second semi-circularremovable plate 162 is releasably hinged to the first hold-down plate 161 as described hereinafter. - In many known hydrants, a drain hole is located in the casting above the plunger and drains the outlet to well below frost level when the
valve 105 is closed, but is isolated from the flow passage when thevalve 105 is open. The Kupferle Mainguard™ hydrant has a particularly elegant arrangement in which o-rings on theplunger 105 isolate the drain hole without ever contacting the drain hole, but the particular arrangement is not critical to the present invention. In accordance with the present invention, the drain hole of the Kupferle Mainguard™ hydrant is replaced by a threaded elbow 141 (FIGS. 8 and 18 ) into which is threaded thesecond adapter 140. Thesecond adapter 140 includes anelbow 142 into which is threaded the third access tube orpipe 170; the third access tube having acap 171 threaded onto its upper end. Near the lower end of thethird access tube 170 is adrain hole 172. At the lower end of theaccess tube 170 is a threaded passage 173 (FIGS. 13 and 14 ) communicating with the interior ofvalve stem pipe 120 through theelbow 141. Thus, when the threadedpassage 173 is open, thedrain hole 172 functions as an ordinary drain hole. If, however, it is desired to isolate the interior of the hydrant from the gravel or other material surrounding thedrain hole 172, the threadedpassage 173 may be closed. This might be desired if, for example flooding occurs, thereby increasing the chances of backflow from the drain hole into the potable water supply. Blocking the threaded passage is easily accomplished with a rod 174 (FIG. 12 ) extending to the top of theaccess tube 170. One end 174 a of the rod is formed with a non-circular shape to make it easy to grip, and theother end 174 b is formed with a male threaded stud having an o-ring at a shoulder at the top of the stud. A user needs merely to remove thecap 171 from theaccess tube 170, hold the rod at its non-circular end 174 a, and screw the threadedend 174 b of therod 174 into thepassage 173 in order to isolate the drain hole from the potable water in the hydrant. When it is desired to open the drain hole, to render the hydrant freeze-proof, the user removes thecap 171, unscrews therod 174, turns it over, and drops it back into theaccess tube 170, where the non-circular end 174 a ensures that water can flow through thepassage 173 and out thedrain hole 172. The entire operation can be carried out from above, without digging or reaching down to the level of the hole. This feature is believed to be useable with all hydrants. - The
device 1 permits numerous types of flushing, depending on the user's needs at any time. Because the basic unit consists mainly of pipes and a casting, the additional cost to the user is not great in comparison with the cost of digging and installing a flushing hydrant of any sort. Typically the device, as any hydrant, is connected to a water main 220 through an auxiliary shout-offvalve 221, as shown inFIG. 3 , by digging a pit, filling it with gravel to the desired depth, and bolting theinlet 103 of thedevice 1 to a flange of the water main. Asewer line 191 is run from the fitting 190, to a sewer or appropriate discharge point, adding a P-trap if desired. Gravel is then added around thedevice 1, and the pit is filled with dirt to ground line. - In its simplest configuration, no hardware beyond that already described is installed in the
device 1. When a user wishes to flush that portion of the water system, he or she opens thecover 210 of thedevice 1, and removes thecap 111 from theoutlet pipe 110. Although not strictly required, an outlet pipe 230 (FIG. 8 ) can be threaded into theoutlet pipe 110, and the operatingnut 106 is turned to move the operatingrod 107 andplunger 105 upward. This allows water to flow throughhydrant waterway 110 and outhydrant discharge pipe 230. When the hydrant is closed, o-rings on theplunger 105 move down and allow water to drain fromhydrant 1 throughdrain hole 172. - As desired or needed, the following options may be added to the device of
FIGS. 1-7 : -
Rod 174 can be turned over and screwed into threadedpassage 173 to plug the drain. Then water sampling can be performed without cross-contamination risk. As shown inFIGS. 9 and 10 , sampling is performed by removingcap 151 from thefirst access tube 150, sliding asampling rod 235 downfirst access tube 150, and threading thesampling rod 235 ontoconnector 136. The sampling rod is preferably a Kupferle Model 92. After sampling, thesampling rod 235 and its water will be removed to prevent freezing, and thecap 151 replaced. - As shown in
FIG. 11 , if continuous flushing is desired, aflushing pipe 240 is threaded ontoconnector 136. Water will flow up through flushingpipe 240 and discharge, with air-gap in between, down into sewer pipe fitting 190 andsewer line 191. Theflushing pipe 240 is preferably a modification of thesampling rod 235 with a longer discharge tube. It may also be a modification of the Kupferle Model 5100 with a male threaded connector at its inlet end and a suitably dimensioned outlet tube. - As shown in
FIGS. 15-17 , removal of hold downplates stopper 165 allows insertion of anautomatic flushing assembly 250 including anautomatic valve 251, anautomatic drain 252, and discharge piping 257. Thelower end 255 of theassembly 250 is a push-together o-ring connection which is inserted into thefemale pipe end 139. The upper end of theassembly 250 terminates in a quick-disconnectmale part 256. The upper end of theassembly 250 and the quick-disconnect 256 trap between them a semi-circular removable hold-down plate 161. When the hold-down plate 161 is bolted to the mountingplate 180, theassembly 250 is held against upward movement by theplate 161, in a manner similar to that of the first embodiment of McKeague, U.S. Published Application 2007/0075162 A1 which is incorporated herein by reference.Valve controller 253 is programmed and then suspended fromhangers 164 inplate 162. The valve controller is electrically connected to thevalve 251 by an appropriateelectrical connection 254. Theplate 162 is then hooked intoplate 161 and bolted down. A discharge piping assembly 257 (FIG. 17 ) is then clamped onto thequick disconnect 256, and arranged to discharge into the sewer pipe fitting 190 andsewer 191. Theautomatic valve 251 opens periodically under the control of thecontroller 253. Anair gap 258 prevents backflow of water. When thevalve 251 closes,automatic drain 252 drains water from the pipingassembly 257 and the upper parts ofassembly 250, and the water drains out of the device throughperforated wall 167. - The
automatic valve 251 could be operated remotely by a variety of methods, include SCADA (Supervisory Control and Data Acquisition) systems, radio devices, or any other system which would allow for remote control of thevalve 251. In this variation, thecontroller 253 would be signaled from a remote location to initiate a flushing cycle. - An
alternate embodiment 1′ of the device is shown inFIG. 19 . Thedevice 1′ is substantially similar to thedevice 1, but is modified to be used in installations where there is no sewer line available. In this embodiment, the device is mounted to concrete pad C with spacers S to provide a gap between the bottom of theenclosure 200 and the concrete pad C. Thedevice 1′ does not include thetube 191, and when water is flushed, the water flows through thetube 190 to be discharged horizontally to ground, as shown by the arrows inFIG. 19 . - All patents, applications, and other documents mentioned herein are hereby incorporated by reference.
- Numerous variations in the reconfigurable water flushing and sampling device of the present invention will occur to those skilled in the art in view of the foregoing disclosure. Merely by way of example, the drain hole
female outlet boss 131 could be directly attached tosewer pipe 191. The first andsecond adapters 130 and 40 could be arranged in series rather than on either side of thefirst boss 131. These variations are merely illustrative. The disclosure of preferred embodiments is therefore not by way of limitation, but by way of illustration.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/500,278 US8783282B2 (en) | 2009-10-15 | 2010-10-15 | Reconfigurable water flushing and sampling device |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US25203109P | 2009-10-15 | 2009-10-15 | |
US39164010P | 2010-10-10 | 2010-10-10 | |
US13/500,278 US8783282B2 (en) | 2009-10-15 | 2010-10-15 | Reconfigurable water flushing and sampling device |
PCT/US2010/052822 WO2011047246A2 (en) | 2009-10-15 | 2010-10-15 | Reconfigurable water flushing and sampling device |
Publications (2)
Publication Number | Publication Date |
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US20120192961A1 true US20120192961A1 (en) | 2012-08-02 |
US8783282B2 US8783282B2 (en) | 2014-07-22 |
Family
ID=43876886
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US13/500,278 Expired - Fee Related US8783282B2 (en) | 2009-10-15 | 2010-10-15 | Reconfigurable water flushing and sampling device |
Country Status (2)
Country | Link |
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US (1) | US8783282B2 (en) |
WO (1) | WO2011047246A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170336380A1 (en) * | 2016-05-23 | 2017-11-23 | John C. Kupferle Foundry Company | Portable flushing monitor |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9151023B2 (en) * | 2011-05-27 | 2015-10-06 | Mueller International, Llc | Systems and methods for controlling flushing apparatus and related interfaces |
US10564653B2 (en) | 2018-04-13 | 2020-02-18 | Mueller International, Llc | Flushing verification and management system |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6216792B1 (en) * | 1997-10-20 | 2001-04-17 | Wayne Edwin Miller | Portable fire hydrant |
US20040252556A1 (en) * | 2003-05-31 | 2004-12-16 | Taylor Thomas M. | Remotely actuated quick connect/disconnect coupling |
US7473359B1 (en) * | 2007-07-09 | 2009-01-06 | Barrett Ii F Madison | System for straining water |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1325716C (en) | 1989-06-13 | 1994-01-04 | Marc Campbell | Method and apparatus for hydrant repair |
US6820635B1 (en) * | 2003-09-05 | 2004-11-23 | John C. Kupferle Foundry Company | Flushing attachment for hydrant |
KR100724479B1 (en) * | 2003-11-07 | 2007-06-04 | 엘지.필립스 엘시디 주식회사 | Liquid crystal display device and meothd for inspecting a bonding state with driving circuit |
CA2559973C (en) * | 2005-09-17 | 2013-11-26 | John C. Kupferle Foundry Company | Automatic flushing device for municipal water systems |
-
2010
- 2010-10-15 US US13/500,278 patent/US8783282B2/en not_active Expired - Fee Related
- 2010-10-15 WO PCT/US2010/052822 patent/WO2011047246A2/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6216792B1 (en) * | 1997-10-20 | 2001-04-17 | Wayne Edwin Miller | Portable fire hydrant |
US20040252556A1 (en) * | 2003-05-31 | 2004-12-16 | Taylor Thomas M. | Remotely actuated quick connect/disconnect coupling |
US7473359B1 (en) * | 2007-07-09 | 2009-01-06 | Barrett Ii F Madison | System for straining water |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170336380A1 (en) * | 2016-05-23 | 2017-11-23 | John C. Kupferle Foundry Company | Portable flushing monitor |
Also Published As
Publication number | Publication date |
---|---|
WO2011047246A2 (en) | 2011-04-21 |
WO2011047246A3 (en) | 2011-07-21 |
US8783282B2 (en) | 2014-07-22 |
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